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Calpain-Calpastatin System in Lymphoid Neoplasm of the Aged

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Geriatric Oncology
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Abstract

Two ubiquitous calpains (extremely calcium-dependent, neutral, cytoplasmic cysteine proteases) and their endogenous inhibitor – calpastatin – form the calpain-calpastatin system (CCS). Activity of the CCS is implicated in the processes of proliferation and apoptosis of many human cell types. We have demonstrated a necessity of resting activity of the CCS for adequate proliferative response of nonmalignant T lymphocytes, as well as the reduction of amounts and activities of the CCS proteases in the elderly. On the other hand, we have also shown that hyperactivity of the CCS protects chronic B-cell leukemia (B-CLL) cells from apoptosis and possibly induces their excessive proliferation. As the B-CLL is the typical leukemia of old age, and relatively frequently transforms into the tumor (lymphoma) growth, it was interesting to analyze the existing data on overall role of the CCS in the processes of proliferation, apoptosis, aging, and malignant transformation of human lymphoid cells. This chapter summarizes these data.

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Correspondence to Jacek M. Witkowski .

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© 2018 Springer International Publishing AG

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Witkowski, J.M., Mikosik, A., Bryl, E., Fulop, T. (2018). Calpain-Calpastatin System in Lymphoid Neoplasm of the Aged. In: Extermann, M. (eds) Geriatric Oncology . Springer, Cham. https://doi.org/10.1007/978-3-319-44870-1_70-1

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  • DOI: https://doi.org/10.1007/978-3-319-44870-1_70-1

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-44870-1

  • Online ISBN: 978-3-319-44870-1

  • eBook Packages: Springer Reference MedicineReference Module Medicine

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